The watery grave of an impractical idea.

Stroll among more than 50 large-scale sculptures created by world-class artists.

This beloved American snack was conceived by a hungry coal miner.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

Sip whiskey in a powerhouse that once belonged to a storied hydroelectric dam.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

The famous Beatle secretly visited this Illinois town several times to visit his sister.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

This baseball diamond was home to the Rockford Peaches, a team featured in the hit film "A League of Their Own."

One person’s lost luggage is another person’s treasure.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This historic train station has been converted to a locomotive themed hotel.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A bizarre roadside attraction and the first instance of miniature golf in the world.

More than five miles of underground passageways.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

The pan man stands as a testament to the functionality of American cast iron cookware.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.